DTC B3948 or B3949

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Diagnostic Instructions

  • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

  • Review Strategy Based Diagnosis for an overview of the diagnostic approach.

  • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descr

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You may preview the service manual table of contents by clicking below.

Service Manual Table of Contents

Document Tags

Document Title: DTC B3948 or B3949

diagnostic

instructions

system

procedure

dtcb

signal

circuit

short

ground

open

voltage

right

information

resistance

switch

rear

stop

lamp

control

multifunction

malfunction

description

times

turn

ignition

module

supply

supplied

bthis

detects

bwhen

present

condition

bulb

reference

exterior

connector

testing

scan

tool

appropriate

test

normal

replace

diagnostic procedure

right signal

open resistance

short voltage

switch signal

signal switch

right rear

signal lamp

signal multifunction

multifunction switch

signal lamps

control module

voltage supply

lamp supplied

detects short

signal voltage

circuit bthis

present signal

test lamp

control circuit

left signal circuit

signal circuit open

circuit open short

right signal circuit

signal switch signal

right rear stop

rear stop signal

stop signal lamp

signal lamp control

stop lamp ground

signal multifunction switch

signal lamp supplied

detects short ground

signal voltage supply

voltage supply circuit

supply circuit bthis

detects short voltage

open resistance signal

resistance signal voltage

present signal lamp

times short voltage

short voltage condition

voltage condition open

condition signal lamp

signal lamp inoperative

bcheck signal bulb

signal bulb bulb

bulb bulb open

control module references

appropriate signal lamp

test lamp test

lamp test control

test control circuit